Isagenix has created the practice of Nutritional Cleansing and developed systems that help to promote optimum health. Isagenix systems focus on a complete approach to greater health and wellness with Nutritional Cleansing, a low-calorie meal routine and taking essential daily nutrients. Cleanse Days are a period of low-calorie intake, with no meals and only suggested snacks, accompanied by our Cleanse for Life™ liquid nutritional supplement, which replenishes the body with essentials vitamins and minerals.